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Step * of Lemma quotient-top-union-top

⇃(Top + Top) ⋂ Base ⊆r (Top + Top)
BY
{ (InstLemma `quotient-isect-base` [Top + Top;⌜λ2x y.True⌝]⋅ THENA Auto) }

1
1. ⇃(Top + Top) ⋂ Base ≡ Top + Top ⋂ Base
⊢ ⇃(Top + Top) ⋂ Base ⊆r (Top + Top)

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Latex:

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Latex:
\00D9(Top  +  Top)  \mcap{}  Base  \msubseteq{}r  (Top  +  Top)


By

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Latex:
(InstLemma  `quotient-isect-base`  [Top  +  Top;\mkleeneopen{}\mlambda{}\msubtwo{}x  y.True\mkleeneclose{}]\mcdot{}  THENA  Auto)

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